Some shits and putas are used.
Although the f-word is not actually said except from once at the start there are two uses of f-word substitutes: "Krup you" and "motherloving".
During the Jet Song there are at least a few F-bomb substitutes sung by a few of the Jets.
Bernardo frequently says hijo de puta
Several g-d d--ns
Most of the profanity in the film is in Spanish, and is not subtitled.
One of the Jets calls Anybodys "dickless".
5 godd**n
Racism such as a character telling A Spanish woman that "She's too dark to pass."